/*
 * Copyright (c) 1998-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1999-2002 Apple Computer, Inc.  All rights reserved.
 *
 * HISTORY
 *
 */


#ifndef _IOKIT_IOFWDCLPROGRAM_H
#define _IOKIT_IOFWDCLPROGRAM_H

#include <libkern/c++/OSObject.h>
#include <IOKit/firewire/IOFireWireFamilyCommon.h>
#include <IOKit/firewire/IOFireWireBus.h>
#include <IOKit/IOMemoryCursor.h>

/*! @class IODCLProgram
*/
class IODCLProgram : public OSObject
{
    OSDeclareAbstractStructors(IODCLProgram)

	private :	
	
		void * 						reserved0 ;//fDCLTaskToKernel;
		void * 						reserved1 ;//fDataTaskToKernel;
		void *		 				reserved2 ;//fDataBase;
		void *		 				reserved3 ;//		IOMemoryDescriptor *		fDCLDesc;
		IOMemoryMap *				fBufferMem ;
		void *		 				reserved5 ;//		IOMemoryCursor *			fDataCursor;

	protected:
	
	/*! @struct ExpansionData
		@discussion This structure will be used to expand the capablilties of the class in the future.
		*/    
		struct ExpansionData 
		{
			IOFWIsochResourceFlags		resourceFlags ;
            IODMACommand *              fDMACommand;
		};
		
	/*! @var reserved
		Reserved for future use.  (Internal use only)  */
		ExpansionData *					fExpansionData ;
	
	public :
	
		virtual void			setIsochResourceFlags ( IOFWIsochResourceFlags flags ) ;	// formerly getPhysicalSegs()
		IOFWIsochResourceFlags	getIsochResourceFlags () const ;
		
	protected:
	
		virtual void 			free (void) APPLE_KEXT_OVERRIDE;
	
	public:
	
		virtual bool 			init ( IOFireWireBus::DCLTaskInfo * info = NULL ) ;
		virtual IOReturn 		allocateHW (
										IOFWSpeed 			speed, 
										UInt32 				chan) = 0;
		virtual IOReturn 		releaseHW () = 0;
		virtual IOReturn 		compile (
										IOFWSpeed 			speed, 
										UInt32 				chan) = 0;
		virtual IOReturn 		notify (
												IOFWDCLNotificationType		notificationType,
												DCLCommand ** 				dclCommandList, 
												UInt32 						numDCLCommands ) = 0;
		virtual IOReturn 		start () = 0;
		virtual void 			stop () = 0;
		virtual IOReturn 		pause ();
		virtual IOReturn 		resume ();
				
		virtual void			setForceStopProc( 
												IOFWIsochChannel::ForceStopNotificationProc proc, 
												void * 						refCon,
												IOFWIsochChannel *			channel ) ;
	protected :
	
		void					generateBufferMap( DCLCommand * program ) ;
		IOReturn				virtualToPhysical( 
												IOVirtualRange						ranges[], 
												unsigned							rangeCount, 
												IOMemoryCursor::IOPhysicalSegment	outSegments[], 
												unsigned &							outPhysicalSegmentCount, 
												unsigned							maxSegments ) ;

	public :
	
		IOMemoryMap *			getBufferMap() const ;

	public :
	
		// close/open isoch workloop gate...
		// clients should not need to call these.
		virtual void			closeGate() = 0 ;
		virtual void			openGate() = 0 ;

		virtual IOReturn		synchronizeWithIO() = 0 ;
		
	private:
	
		OSMetaClassDeclareReservedUsed(IODCLProgram, 0);
		OSMetaClassDeclareReservedUsed(IODCLProgram, 1);
		OSMetaClassDeclareReservedUnused(IODCLProgram, 2);
		OSMetaClassDeclareReservedUnused(IODCLProgram, 3);
		OSMetaClassDeclareReservedUnused(IODCLProgram, 4);
	
};

#endif /* ! _IOKIT_IOFWDCLPROGRAM_H */

